Question

Different between myopia and hypermetropia and presbyopia ​

Answer 1

Answer:

Nearsightedness (myopia) is a common vision condition in which you can see objects near to you clearly, but objects farther away are blurry. It occurs when the shape of your eye causes light rays to bend (refract) incorrectly, focusing images in front of your retina instead of on your retina.

Hypermetropia, sometimes called hyperopia, is the term used to define being longsighted. If you are hypermetropic, the image of a nearby object is formed behind the retina. This means that light is focused too far back in the eye, causing things which are close up to appear blurred

Most experts believe presbyopia is caused by changes to the lens inside the eye. As people age, the lens becomes harder and less elastic, making it more difficult for the eye to focus on close objects

Explanation:

Answer 2

Myopia (near-sighted): Difficulty viewing distant objects. ... Hyperopia (far-sighted): Difficulty viewing near objects, such as newspaper print. Presbyopia: Between ages 40-50, your natural lens loses its flexibility to move its focus between near and far objects